package com.example.workflow.common;

import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.module.SimpleModule;
import com.fasterxml.jackson.databind.ser.std.ToStringSerializer;
import com.fasterxml.jackson.datatype.jsr310.deser.LocalDateDeserializer;
import com.fasterxml.jackson.datatype.jsr310.deser.LocalDateTimeDeserializer;
import com.fasterxml.jackson.datatype.jsr310.deser.LocalTimeDeserializer;
import com.fasterxml.jackson.datatype.jsr310.ser.LocalDateSerializer;
import com.fasterxml.jackson.datatype.jsr310.ser.LocalDateTimeSerializer;
import com.fasterxml.jackson.datatype.jsr310.ser.LocalTimeSerializer;

import java.math.BigInteger;
import java.time.LocalDate;
import java.time.LocalDateTime;
import java.time.LocalTime;
import java.time.format.DateTimeFormatter;

import static com.fasterxml.jackson.databind.DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES;
//对象映射器：基于jackson将Java对象转为json，或者将json转换为Java对象
//将JSON解析为Jaca对象的过程称为【从JSON反序列或Java对象】
//从Java对象生成Json的过程称为【序列化Java对象到Json】
public class JacksonObjectMapper extends ObjectMapper {
    public static final String DEFAULT_DATE_FORMAT="yyyy-MM-dd";
    public static final String DEFAULT_DATE_TIME_FORMAT="yyyy-MM-dd HH:mm:ss";
    public static final String DEFAULT_TIME_FORMAT="HH:mm:ss";

    public JacksonObjectMapper(){
        super();
        //收到未知属性时不报异常
        this.configure(FAIL_ON_UNKNOWN_PROPERTIES,false);
        //反序列化时，属性不存在的兼容处理
        this.getDeserializationConfig().withFeatures(FAIL_ON_UNKNOWN_PROPERTIES);

        SimpleModule simpleModule=new SimpleModule()
                .addDeserializer(LocalDateTime.class,new LocalDateTimeDeserializer(DateTimeFormatter.ofPattern(DEFAULT_DATE_TIME_FORMAT)))
                .addDeserializer(LocalDate.class,new LocalDateDeserializer(DateTimeFormatter.ofPattern(DEFAULT_TIME_FORMAT)))
                .addDeserializer(LocalTime.class,new LocalTimeDeserializer(DateTimeFormatter.ofPattern(DEFAULT_TIME_FORMAT)))

                .addSerializer(BigInteger.class, ToStringSerializer.instance)
                .addSerializer(Long.class,ToStringSerializer.instance)
                .addSerializer(LocalDateTime.class,new LocalDateTimeSerializer(DateTimeFormatter.ofPattern(DEFAULT_DATE_TIME_FORMAT)))
                .addSerializer(LocalDate.class,new LocalDateSerializer(DateTimeFormatter.ofPattern(DEFAULT_DATE_FORMAT)))
                .addSerializer(LocalTime.class,new LocalTimeSerializer(DateTimeFormatter.ofPattern(DEFAULT_TIME_FORMAT)));

        //注册功能模块 例如，可以添加自定义序列器和反序列化器
        this.registerModule(simpleModule);
    }
}
